(internet slang, derogatory, offensive, vulgar) One who believes that the Earth is flat.
No comments yet — say something.
Add your own interpretation of "flattard".
Viral internet speak — memes, ratios, main-character moments, and the algospeak of every platform from Twitter to Reddit to TikTok comment sections.
See all Internet & Memes slang on Slangora.
Browse all slang words starting with F.